Uff... -.- well you can use all the other homebrew from retail also on a dex.

1. Please take the update and extract it >>
2. Take the param.sfo and put it in any other base folder >>
3. Put all needed files in (just some files from a other game and DON'T put the .edat in) and edit the package.conf to match the update >>
4. Use a fake aka debug or fselfed eboot.bin >>
5. Install that pkg to get it registrated on your console >>
6. Now start ftp app and navigate to the update folder >>
7. Copy over the original update files >>
8. Start game and report here

I need to know how to install the dex firmware after flashing the nors : recovery, service mode or normally with a PS3UPDAT.PUP? my flash.bin is ready but i want to know the correct method to install the new firmware. thanks for help